End-position-monitoring of a gas injector

摘要

A method includes checking whether an electromagnetically actuated gas injector arranged in an internal combustion engine between a fuel source and a combustion chamber is in the closed end position thereof. According to the method, an electric test voltage is applied to the gas injector and the discharge current generated by the electric test voltage is measured.

主权项

1. An internal combustion engine comprising: an engine control, a source for gaseous fuel, at least one combustion chamber in which the gaseous fuel is ignited, and an electromagnetically actuated gas injector arranged between the source for the gaseous fuel and the at least one combustion chamber, wherein at least one moment in time at which the gas injector should be in a closed end position the engine control applies an electric test voltage to the gas injector, measures the discharge current caused by the electric test voltage and thus draws a conclusion about the existence of the closed end position of the gas injector.